Product name:	Parallel constant  power heating cable	Model No.:	HWLX	Dimension:
Max maintain temperature range:	105℃~180℃	Max admissible temperature range:	150℃ ~ 205℃	2.2×4.5mm
Voltage:	110V~240V	Product  certification:	CE & ROHS

 

 

 

 

High temperature constant Wattage heating cable

 

Application: maintaining process temperature or freeze proofing; the application of high performance HWLX2-J4 high temperature constant power heating cable is same with that of HWLX2-J3, they are of high temperature resistance. It is especially suitable for heating and anti freezing of asphalt or heavy viscous oil, and can be used in Zone 2 Level I/II explosion proof environment.

The power bus is made of two or three parallel insulated copper conductors, heating wires are wound on the main insulation layer, which are connected with the bus at certain interval (i.e. heating section) to form a continuous parallel resistance; after the bus is electrified, each parallel resistance is heated, so as to form a continuous heating cable, which can be cut off at free will in service, but it cannot be overlapped and shall be used together with a temperature controller. 

As seen from the figure, high temperature resistant constant power heating cable is mainly composed of bus, the insulation layer, inner sheath, heating core, outer sheath, shield layer and reinforced layer. 

1. Tinned copper bus 2. Insulation layer of the power supply  3. Insulation layer of the inner sheath   4. Ni-Cr alloy heating element  5. Insulation layer of the outer sheath   6. Weaved sheath   7. Fluorine plastic sheath outside the waved layer can provide additional protection for heating cable and waving layer in pipes under chemical corrosion environment and underground pipes. 

 

Parallel constant power heating cable

 

Parallel constant power heating cable can be used for pipe and equipment freeze protection and process temperature maintenance requiring high power output or high temperature exposure. This type provide an economical alternative to self regulating heating cable but requires more skill for installation and more advanced control and monitor system. Constant power heating cables can provide process temperature maintenance up to 150°C and can withstand exposure temperatures up to 205°C with power on.

 

Working principle

 

Two paralleled stranded copper wire as the bus wires with insulation layer FEP, then wrap the nickel-chromium alloy as the heating wire connect with bus wires at regular intervals, form the parallel resistance. Finally covered with insulation jacket FEP. When the bus wires power on, each parallel resistance begin to heat. Thus form a continuous heating cable.

 

RDP2 Single phase constant wattage heating cable used to freeze protection,heat preservation for all kinds of pipelines and instruments.Application such as factory Zone 1,Zone 2 explosive gas atmosphere area. 

 

Product specification and technical features

 

 

Model		Rated power (W/m)	Max Usage length(m)	Max maintenance  temperature(°c)	every heating section (mm)
Common model	Strengthen model
HWLX2-J3-10	HWLX2(Q)-J3-10	10	210	150°c	1760
HWLX2-J3-20	HWLX2(Q)-J3-20	20	180	120°c	1250
HWLX2-J3-20	HWLX2(Q)-J3-30	30	150	90°c	1040
HWLX2-J3-40	HWLX2(Q)-J3-40	40	140	65°c	880

 

 

Technical data:

 

Operating voltage 220V

Max maintain temperature range: 105℃~180℃

Max admissible temperature range:150℃~205℃